Knob attachment



(No Model.)

W. H. GONNE.

Knob Attachment.

No. 241,967. Patented May 24, I881.

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WILLIAM H. GONNE, OF OHATHAM, ONTARIO, CANADA, ASSIGNOR OF THREE- FOURTHS TO GEORGE WATKINS, OLIVER M. HIDDEN, AND F. H. BLACK- MAN, ALL OF DETROIT, MICHIGAN.

KNOB ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 241,967, dated May 24, 1881.

I Application filed March 8, 1881. (No model.)

i To all whom 'it may concern:

Be it known that I, WILLIAM H. GoNNE, of Ohatham, in the county of Kent, Province of Ontario, and Dominion of Canada, have invented an Improvement in Knob Attachments for Doors, of which the following is a specification.

The nature of my invention relates to certain new and useful improvements in the construction of knob attachments for doors, by

means of which said attachments may be adjusted readily and quickly to difierent thicknesses of doors.

The invention consists in the peculiar con- 1- 5 struction of the spindle and its combination with the knobs, by means of which a ready adjustment is had, while simplicity and economy of construction is combined with the required strength and utility, as more fully hereinafter described.

Figure l is an elevation, partially in longitudinal section, as necessary to show my improvement. Fig. 2 is an end view of one of the knobs, showing the thimble which embraces the extension of the spindle. Fig. 3 is a view of my extension part of the spindle in perspective.

In the accompanying drawings, which form a part of this specification, A represents a 0 knob secured to the end of a spindle, B, rigidly by any convenient or desired means. The opposite end of the spindle, which is rectangular its whole length, is provided with a screw-thread, a, out upon its corners, as plainly 3 5 shown in the drawings.

0 is an extension of the spindle, provided with a nut, 12, which engages with the thread upon the spindle. Two arms, 0 c, which may also be threaded, extend from this-nut on each side of the spindle, and their free ends are secured to the bridge d, through which a hole is centrally tapped to receive the screw 6, which secures the knob D upon the extension.

E is arose-plate with acentral recess, which embraces the inner end of the spindle-extension and the inner end of the knob.

In practice the knob D, rose E, and extension U are removed from the stationary spindle B after taking out the screw 6. The spindle B is then inserted through the door until 0 the knob A and rose F impinge against the side of the door. Then upon theopposite side of said door place the rose E and screw the extension upon the spindle until its inner end impinges against said rose. Then place the knob D upon the extension and put in the screw, and by it draw and hold the parts together.

It will be noticed that the opening through the knob D is nearly rectangular, to conform to the shape of the extension 0, to prevent the latter from turning within the former, and this opening is provided with bushings i 1?, to prevent an undue strain upon the knob or to give it the necessary shape. 6

\Vhat I claim as my invention is-- In a knob attachment for doors, the spindle B, screwing into the extension O, both the spindle and extension having flat sides, incombination with the knob D, having a nearly rectangular opening to correspond with and receive the extension and spindle, the extension 0, having a flange, Z1, and the screw e, substantially as and for the purpose described.

WILLIAM H. GONNE.

Witnesses:

H. S. SPRAGUE, A. BARTHEL. 

